Heating apparatus.



Ho. 642,!97. Patented Jan. 30, I900. C. BENDER.

HEATING APPARATUS.

(Application filed Sept. 1, 1899.)

(No Model.)

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No. 642,597. Patented Jan. 30, I900. C. BENDER.

HEATING APPARATUS.

(Application filed Sept. 1, 1899.) (No Model.) 2 Sheets$heet 2,

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CONRAD FENDER, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TO BELLE M. GATES, (9F SAME PLACE.

HEATING APPARATUS.

SPECIFICATION forming part of Letters Fatent N 0. 642,197, dated January 30, 1900. Application filed September 1, 1899. Serial No. 729,197. (No model.)

To all whont it may concern:

Be it known that I, CONRAD BENDER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Heating Apparatus, of which the following is a specification.

The object of my present invention is to provide an efficient means of utilizing the heat from a grate, which would otherwise be wasted, in warming other apartments than that in which the grate is situated.

A heating apparatus embodying my said invention will be first fully described and the novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof, and on which similar reference characters indicate similar parts, Figure 1 is a central vertical sectional View, on the dotted lines 1 1 in Figs. 2 and 3, of a grate, its flue, and adjacent parts, constituting a heating apparatus embodying my present invention; Fig. 2, a horizontal sectional view of the same as seen when looking downwardly from the dotted line 2 2 in Fig. 1; and Fig. 3, a front elevation of such a grate, some fragments being broken away to better show the interior construction.

As shown in Fig. 3, my improved heating apparatus in its preferred form has the appearance from the front of an ordinary grate, except that the bottom, front, and back of the combustion-chamber or fuel-basket are composed of tubes. In Fig. 1 this basket is shown as containing a natural-gas burner; but obviously the character of fuel and method of using it are no part of my present invention.

The tubes 1, composing the front and bottom of the fuel-basket, are arranged horizontally. The tubes 2, which constitute the rear visible side of the basket or combustionchamber, are arranged at a steep angle, and there are preferably several rows, (three rows are shown,) although, of course, a single row may be used without departing from my invention.

All the pipes communicate at one end with a cold-air chamber 3, which is supplied with air through a suitable duct leading in from any convenient side of the structure (it is shown as coming from the bottom side) and which extends around behind and at one side of the frame or wall at of the grate, and at the other end said pipes communicate with a hot-air chamber 5, which extends above and at another side of the frame or wall of the grate. The cold air passing through these various tubes becomes heated to a high degree with what would be otherwise the waste products of combustion. A flue-pipe 6 ex tends for a certain distance up through the hot-air chamber 5, and the radiation therefrom also aids in raising the temperature in the hot-air chamber 5 to some extent. This may be controlled somewhat by a damper 7, operated by a handle 8, which damper is situated near the upper end of said pipe 6. Above the upper end of the pipe 6 I have shown the flue as of the ordinary brick construction. Near the top of the pipe 6 the brickwork extends into and closely surrounds said pipe 6, cutting off the flue above from the hot-air chamber below, as clearly shown in Fig. 1. In said Fig. 1 the line 10 represents the floor of the lower story of the build ing, and the part marked 12 represents the floor of the second story. The intermediate portion of the structure just below the floor 12 is broken away in order that the drawings may be made on a larger scale. A part (and in some cases all) of the air to be heated may be taken from the room in which the grate is situated or from some other room to which the grate structure forms a part of the wall or Where such structure is closely adjacent to said wall. I have shown a means of taking the air from the same room in which the grate is situated in Fig. 2, whereI have shown an air-passage 13 leading into the chamber 3 from said room, which passage is provided with a door lei. When it is desired to permit the air to pass in through this passage, the door 14 (which may be either a swinging door or in the form of a register) is opened and the natural draft will draw the air in. This also serves to cause a circulation of air in the room,with the well-known advantages of such a circulation.

I have shown my improved heating apparatus as arranged to warm four rooms.

The

room in which the grate itself is situated is warmed from said grate in the ordinary manner. The room at the rear side of the grate is warmed from the hot-air chamber 5 through the register 15, and two rooms in the second story are warmed from said hot-air chamber through the registers 16 and 17, respectively.

I consider the peculiar arrangement and location of the diagonally-set pipes 2 as of great advantage. As will be readily seen, the cold air is enabled to pass through them much more freely and rapidly than would be possible with any other arrangement, and they are located in the direct path of the products of combustion while on their way from the fuel-basket or combustion-chamber to the flue, where they are subjected to the intensest heat. When set in several rows and staggered, as shown in Fig. 2, the products of combustion are compelled to take a zigzag or serpentine course, thus adding much to the efficienoy of the apparatus.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

1; In a heating apparatus, the combination of the fire-box set in a surrounding casing with a cold-air chamber on one side and at its rear, and a hot-air chamber surrounding its opposite side and top, a fine leading from the top of said fire-box up through said hot-air chamber, and a series of pipes forming the bottom, front and rear of the fire-pot, a part running horizontally and communicating at one end with the cold-air chamber and at the other end with the hot-air chamber, and a part running diagonally from near the bottom to the top of the fire-box, communicating at their lower ends with the cold-air chamber in the rear and at their tops with the hotair chamber above, all substantially as set forth.

2. In a heating apparatus, the combination, of the fire-box set in a surrounding casing arranged with a cold-air chamber around its rear and one side, and a hot-air chamber around its top and other side, the fire-pot composed of tubes running near together horizontally across the box and communicating at one end with the cold-air chamber and at the other end with the hot-air chamber, the back of the box composed of pipes running diagonally from near the bottom of the box at its rear to near its front at its top, and communicating at their lower ends with the coldair chamber and at their top ends with the hotair chamber, said pipes being set in rows and staggered, the flue running upward through the hot-air chamber, and the dampers and registers for controlling the draft, and How of air, all substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 29th day of August, A. D. 1899.

CONRAD BENDER. [L. s.]

Witnesses:

CHESTER BRADFORD, JAMES A. WALSH. 

